421345201 has 2 divisors, whose sum is σ = 421345202. Its totient is φ = 421345200.

The previous prime is 421345189. The next prime is 421345207. The reversal of 421345201 is 102543124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 352538176 + 68807025 = 18776^2 + 8295^2 .

It is a cyclic number.

It is not a de Polignac number, because 421345201 - 2⁹ = 421344689 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (421345207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210672600 + 210672601.

It is an arithmetic number, because the mean of its divisors is an integer number (210672601).

Almost surely, 2^421345201 is an apocalyptic number.

It is an amenable number.

421345201 is a deficient number, since it is larger than the sum of its proper divisors (1).

421345201 is an equidigital number, since it uses as much as digits as its factorization.

421345201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 421345201 is about 20526.6948386729. The cubic root of 421345201 is about 749.6859135216.

Adding to 421345201 its reverse (102543124), we get a palindrome (523888325).

The spelling of 421345201 in words is "four hundred twenty-one million, three hundred forty-five thousand, two hundred one".